Get rid of six dependency

[zwimer]

Fixes: https://github.com/angr/claripy/issues/294

[github-actions[bot]]

Unit Test Results

     91 files  +     81       91 suites  +81   1h 22m 23s :stopwatch: + 1h 21m 48s 1 393 tests +1 091  1 303 :heavy_check_mark: +1 061  90 :zzz: +30  0 :x: ±0  1 399 runs  +1 097  1 309 :heavy_check_mark: +1 067  90 :zzz: +30  0 :x: ±0 

Results for commit 6430fb82. ± Comparison against base commit 51d17532.

:recycle: This comment has been updated with latest results.

[zwimer]

@twizmwazin Should I also update setup.cfg to say Programming Language :: Python :: 3.8? Right now it says Programming Language :: Python :: 3.6 even though python_requires = >= 3.8

[twizmwazin]

@twizmwazin Should I also update setup.cfg to say Programming Language :: Python :: 3.8? Right now it says Programming Language :: Python :: 3.6 even though python_requires = >= 3.8

I'm pretty sure this is copy-pasted among all of the tier-1 packages so we should update all of them.

[zwimer]

@twizmwazin Should I also update setup.cfg to say Programming Language :: Python :: 3.8? Right now it says Programming Language :: Python :: 3.6 even though python_requires = >= 3.8

I'm pretty sure this is copy-pasted among all of the tier-1 packages so we should update all of them.

Would you like me to update this here or will you do all together?

[zwimer]

Ping @rhelmot